Unable to connect to mongodb Atlas

Hey, it works with local db but fails with mongodb atlas connection string, I'm using the syntax like this:
```ts
await client.connect(
"mongodb+srv://user:password@name.mongodb.net/db?authMechanism=SCRAM-SHA-1"
);

// also tried this

await client.connect(
"mongodb+srv://user:password@name.mongodb.net/db?retryWrites=true&w=majority&authMechanism=SCRAM-SHA-1"
);

// and this

await client.connect(
"mongodb+srv://user:password@name.mongodb.net/db?retryWrites=true&w=majority"
);
```

It always fails here: https://deno.land/x/mongo@v0.29.0/src/client.ts#L41
with error:
```json
{
"ok":0,
"errmsg":"Authentication failed.",
"code":18,
"codeName":"AuthenticationFailed",
"$clusterTime":{"clusterTime":{"$timestamp":"7043035952079437828"},"signature":{"hash":"z8hkCMby/OYpTnJXHNS7+rZfBvI=","keyId":{"high":1625418439,"low":1,"unsigned":false}}},
"operationTime":{"$timestamp":"7043035952079437828"}
}
```

Can you share if it's a known issue or do I need to provide some additional params?

Start at src/client.ts:41 and reproduce the failure with the MongoDB Atlas connection strings shown in the issue. Compare the local-database and Atlas connection paths, then verify the reported AuthenticationFailed response; done means identifying whether the driver needs additional parameters or documenting the required connection syntax.

Written by the indexing model from the issue text.